Results 21 to 30 of about 8,364,083 (287)

On the Geometry of Orbits of Conformal Vector Fields

open access: yesJournal of Geometry and Symmetry in Physics, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Narmanov, Abdigappar, Rajabov, Eldor
openaire   +3 more sources

Optimal E-Field Vector Combination for a Highly Focused Antenna-Array [PDF]

open access: yes, 2014
A near-field highly focused circular phased-array antenna for 5.8-GHz radio frequency identification (RFID) applications is presented. The electric field (E-field) at the focus is enhanced by a constructive vector combination in a three-dimensional (3-D)
Perallos, Asier   +5 more
core   +1 more source

Gradient Ricci Solitons with a Conformal Vector Field [PDF]

open access: yes, 2018
We show that a connected gradient Ricci soliton (M,g,f,λ) with constant scalar curvature and admitting a non-homothetic conformal vector field V leaving the potential vector field invariant, is Einstein and the potential function f is constant.
Ramesh Sharma, Sharma, Ramesh
core   +1 more source

A classification of conformal vector fields on the tangent bundle

open access: yesUkrains’kyi Matematychnyi Zhurnal, 2020
UDC 514.7 Let ( M , g ) be a Riemannian manifold and T M be its tangent bundle equipped with a Riemannian (or pseudo-Riemannian) lift metric derived from g .  We give a classification of infinitesimal fibre-preserving conformal transformations on the tangent bundle.
Zohre Raei, Dariush Latifi
openaire   +2 more sources

Partition functions of higher derivative conformal fields on conformally related spaces

open access: yesJournal of High Energy Physics, 2021
The character integral representation of one loop partition functions is useful to establish the relation between partition functions of conformal fields on Weyl equivalent spaces.
Jyotirmoy Mukherjee
doaj   +1 more source

Logarithmic bulk and boundary conformal field theory and the full centre construction [PDF]

open access: yes, 2012
We review the definition of bulk and boundary conformal field theory in a way suited for logarithmic conformal field theory. The notion of a maximal bulk theory which can be non-degenerately joined to a boundary theory is defined.
Runkel, Ingo   +6 more
core   +1 more source

On Riemannian manifolds endowed with a locally conformal cosymplectic structure

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2005
We deal with a locally conformal cosymplectic manifold M(φ,Ω,ξ,η,g) admitting a conformal contact quasi-torse-forming vector field T. The presymplectic 2-form Ω is a locally conformal cosymplectic 2-form.
Ion Mihai   +2 more
doaj   +1 more source

On a class of even-dimensional manifolds structured by an affine connection

open access: yesInternational Journal of Mathematics and Mathematical Sciences, 2002
We deal with a 2m-dimensional Riemannian manifold (M,g) structured by an affine connection and a vector field 𝒯, defining a 𝒯-parallel connection. It is proved that 𝒯 is both a torse forming vector field and an exterior concurrent vector
I. Mihai, A. Oiagă, R. Rosca
doaj   +1 more source

Pole-skipping of scalar and vector fields in hyperbolic space: conformal blocks and holography

open access: yesJournal of High Energy Physics, 2020
Motivated by the recent connection between pole-skipping phenomena of two point functions and four point out-of-time-order correlators (OTOCs), we study the pole structure of thermal two-point functions in d-dimensional conformal field theories (CFTs) in
Yongjun Ahn   +5 more
doaj   +1 more source

Analytical solutions of spherical structures with relativistic corrections

open access: yesEuropean Physical Journal C: Particles and Fields, 2023
This paper analyzes the characteristic of a non-static sphere along with anisotropic fluid distribution in the background of modified $$f(\mathcal {G})$$ f ( G ) theory.
M. Z. Bhatti   +3 more
doaj   +1 more source

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